Bug 185294 – [GTK]minibrowser shows no scrollbars

• Component: WebKitGTK
• Status: RESOLVED WONTFIX

[Rob Buis]

Created attachment 339522 [details]
Screenshot

See the screenshot. This is on a (hopefully) standard Ubuntu 16.04, I simply ran run-mini-browser --gtk and google.com should show scrollbars.

[Carlos Garcia Campos]

And I guess they don't appear either when moving the mouse over the view? Note that we use overlay scrollbars by default.

[Rob Buis]

(In reply to Carlos Garcia Campos from comment #1)
> And I guess they don't appear either when moving the mouse over the view?
> Note that we use overlay scrollbars by default.

Correct, that makes no difference. BTW I get a lot of warnings like this on the console:
Starting MiniBrowser.
Gtk-Message: Failed to load module "unity-gtk-module"

(MiniBrowser:14423): Gtk-WARNING **: Theme parsing error: gtk-widgets-borders.css:31:18: The :insensitive pseudo-class is deprecated. Use :disabled instead.

(MiniBrowser:14423): Gtk-WARNING **: Theme parsing error: gtk-widgets-borders.css:35:18: The :insensitive pseudo-class is deprecated. Use :disabled instead.

[Rob Buis]

(In reply to Rob Buis from comment #2)
> (In reply to Carlos Garcia Campos from comment #1)
> > And I guess they don't appear either when moving the mouse over the view?
> > Note that we use overlay scrollbars by default.
> 
> Correct, that makes no difference. BTW I get a lot of warnings like this on
> the console:
> Starting MiniBrowser.
> Gtk-Message: Failed to load module "unity-gtk-module"
> 
> (MiniBrowser:14423): Gtk-WARNING **: Theme parsing error:
> gtk-widgets-borders.css:31:18: The :insensitive pseudo-class is deprecated.
> Use :disabled instead.
> 
> (MiniBrowser:14423): Gtk-WARNING **: Theme parsing error:
> gtk-widgets-borders.css:35:18: The :insensitive pseudo-class is deprecated.
> Use :disabled instead.

I noticed above warnings go away when I switch to the High Contrast theme and restart minibrowser. Unfortunately this theme looks awful in my eyes :)

[Carlos Garcia Campos]

It's a theming issue then

[Rob Buis]

(In reply to Carlos Garcia Campos from comment #4)
> It's a theming issue then

Yes, internal chat showed up that 16.04 is maybe too old? Anyway I don't feel strongly about this bug since I should update my Ubuntu soonish anyway. So from my side I am fine with closing it.

[Michael Catanzaro]

unity-gtk-module implements custom downstream overlay scrollbars on Ubuntu 16.04. So if that module fails to load, the likely consequence is that it would be impossible to see scrollbars. I think the only way to get the module to load reliably inside the build-webkit environment would be to add it to the jhbuild moduleset. And that's probably not worth it, because Ubuntu 18.04 uses upstream GTK+ overlay scrollbars. Hence, I'm going to suggest WONTFIX. But please do reopen if you have the same problem after upgradingg to 18.04.